Cystoscope.



R, H. WAPPLER.

oYsTosooBB. APPLICATION FILED JAN. 21, 1911.

1,021,809:- Patented Apr.2, 1912.

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. nEINH'oLD H. WAPPLER, or NEW Yonx, N.

Y., ASSIG-NOR- T AMERICAN CYSTOSCOPE MAKERS, IN C.. 0]?- NEW YORK, I\T.Y., `.A CORCPORYATIONn i cYs'ros'coPE.

Specification of Letters Patent.

Patentednpr. e, 191,2.

npplieatipn mea January 21, 1911. serial'm. 603,794.

l'o all whom it may concern: Be it known that I, REINHOLD H. WAP- PLER,a citizen of the United States, residing at New York'city, county andState of New York, have invented a new and Improved Cystoscope, o'fwhich the following ,is a specification.

This invention relates to cystoscopes and similar optical instrumentsintended to be used for making examinations of -inner parts of the humanbody which are not directly accessible to the eye of the physician. Theinvention comprises more particularly novel and effective means forenlarging the 'angleof vision -of the instrument and for simultaneouslyincreasing the luminosity of the image produced, so that an extendedrapid and minute observation of the affected parts may take place. Forobtaining this result, an objective system is em-- ployed whichembracesa refracting and refleeting convex lens, and preferably,'a pair ofcoperating additional lenses all of which are4 mounted in a commonsocket secured to one end of the catheter or cystoscope tube. `Thelatter contains a plurality ef reversing systems, each comprising threelenses, whereby the illumination of the image is greatly increased. Theocular system se- 30 cured to the other end of the tube comprises amagnifying lens andl a prism to produce the desired rightsided anduprightpicture. In the accompanying drawing: Figure 1 is anelevationpartly in section of a cysto- 35 scope embodying my invention;Fig. 2 an enlarged longitudinal section partly broken away'- and withsome 'of thev parts fomitted;

Fig. 3 a front view of the objective socket; Fig. 4 a rear view thereofwith the refracting, and reflecting lens removed;Fig.-5 .a side -view ofsaid lens, and Fi 6' a cross section through the prism holdlng tubeonline 6-'6, Fig. 2. -Into one end 'of/a tube 10 is screwed the reducedthreaded end 11 of a socket 1-2. The latter isprovided with a bore 13that constitutes part of a sphere and merges into a. cylindrical bore 14`oflike diameter, the i axis of saidvcylindrical bore extending at 50 anangle of ap roximately 45 to that of the tube.' At is front, socket 12is provided with a circular fenestral opening 15 extending substantiallyparallel to the axis. v of tube and located diametrically oppo- 55 sitebore 14. Bore 13 communicate through central aperture 16 with acylindrical central recess 17 of kthe socket. Into bore 13 is fit.-

lted a convex lens 18 which is obtained by whole thus forming jointly awedge-like body cut from a sphere. In mounting the lens, its convexsurface" is brought-into contact with bore 13 and it is so placed thatthe 'light-admitting plane 20 extends Hush with the fenestral vopening15, while the light-reecting plane 19 is alined with the boundlarybetween bores 13, 14. Lens 18 is held y1n position bya disk 21'jammedinto bore 14,

and engaging plane 19 which is preferably provided with a layer 22 ofmetallic silver or other light-relecting medium. Into recess 17 isfitted a lens 23 shown to beheld in position by a stepped sleeve 24carrying at its outer end a lens 25. i

By the construction described, the .parts `may be readily assembled,while owing to `the engagement ofthe convex lens with thecorrespondinglycurved bore 13 of socket 12 the entrance ofwater, etc.,'intothe socketis effectively prevented.'

. Intermediate the objective and the ocular hereinafter more fullydescribed, ftube 10 contains two Vor more light carryingand reversingrlens-aggregates or systems, each consisting of three-properly spacedlenses 26, the drawing showing the` tube provided with three aggregatesof lenses26, 262, 263. The most'advantageous.number of revers'- ingaggregates depends upon the diameter of the catheteri'zing tube, anarrow tube requiring a triple reversing system'while a4 wide tube needsto be fitted with but a double -reversing system. If, for instance, athin tube -is provided with three sets of light-carrying lenses, itsillumination is almost normal, or in "other words, there. are as manylenses in the tube aswould be required for making lthree telescopes,hence there will strumentl offers reliable and eective means for rapidlydiagnosing urinary and other internal disorders. The abovrze describedmutual position of the biplano-spherical lens and the reversing prismdepends of course upon the number of reversing systems used. If only twosuch systems are employed, prism 27 must be turned from the positionshown in the'drawing through an angle of 90 toward either side, to eectthe proper turning of the pencils and to thus produce the desiredupright rightsided image. j l v Prism 27 is tightly .tted into a sleeve32 which is in turn embraced by a screw socket 33 tapped into acorresponding annulusf 34 secured to tube 10, said annulus beingtliread'edas at 35 for the attachment of an eye tube 36. Into an outer,recess ofv socket 33 is fitted the plane protective lglass 3lwhile theinner end of sleeve 32 carries the magnifying lens 30 hereinabovereferred to.

It is obvious that changes maybe made in arranging and mounting theconstituent parts of the objective and ocular systems Without departingfrom the spirit of my invention. v y As already stated, there isobtained by the instrument a I true, rightsided luminous image of thepart inspected, while furthermore the angle of vision is greatlyenlarged, so that an extensive surface is viewed, without necessitatingan objectionable shifting or turning of the instrument. I claim:

l. In an optical instrument of the class described, an objective sockethaving a bore that constitutes part of a sphere and a fenestral openingcommunicating with said bore,VV

and arefractin and reflecting convex lens fitted lnto-said ore theradius of curvature of the lens equaling substantially that of the nbore.

2. In an optical instrument of the class prism.

described, an objective socket having a bore that vconstitutes part of asphere and a f enestral opening communicating with sald bore, arefracting and reecting convex v lens within the bore, the radius ofcurvature of the lens equaling substantially that of the 'bore and meansfor retaining the lens within the bore. Y

3In an opticalinstrument of the class described, an objective sockethavingl a fethat constitutes part of a sphere and merges into acylindrical bore, a refracting and reiecting convex lens fitted into thefirst named bore,'a. disk fitted into the second named bore forretaining the lens in position, and a pair of additional lenses -fittedinto the socket and coperatingwith the .first named lens.

5. An optical instrument of the class described, composed of a tube, anobjective socket tapped into one end thereof and hav- -ing afenestralfopening and a communicating hemispherical bore that mergesinto a cylindrical bore, a hemi-.spherical lens fitted into thespherical bore with its light-admitting plane fiusli with the window andwith its reflecting plane alined with the boundary between theheini-spherical and cylintube, an ocular socket tapped into the otherend of said tube, a reversing prism within said socket, the base ofwhich is so set relatively to the light-admitting plane of the firstnamed lens Jthat an upright rightsided image is obtained, and amagnifying lens intermediate the lens-aggregates and the REINHOLD H.WAPPLER.

Witnesses:

ARTHUR E. ZUMPE, KATHERYNE KOCH.

